Measuring device



June 4, 1929. W F BULL 1,715,405

MEASURING DEVXGE Filed May 21, 1926 10 l 73 wml/2l if @im @A :f ,22 14 f1 Ziyi-4 Wwf 2f I I I IN EN OR.. f WML/2M if.; ATroRNEY :Patented June 4,1929. Y

'WILLIAM rRANo'Is Bunn, or 'Nnw YORK,` n.' Y.

MnAsUnING :onvicnff 1 "j Appneamii fue@ May 21,`

My invention relates to measuring devices andrcfers particularly to devices su1table for tliefdimensional measurement ot objecitsgof various, sizes and shapes.

Among the objectsiofmy invention, vis-a l' device capable ofmaking iine and accurate Y measurementsv of-objects, in which the oper l* ation is quickly obtained, .thefemployment of tine adjusting screws avoide `d and whichl hasuses to which the ordinary micrometerandvernier calipers cannot be-applied.

In lthe accompanying drawings illustrating one formof the device ofmyinvention,

line 2-2 of Figure 1. Y

. Figure S'is a broken bott-0in viewlof a similar parts are designated by vsimilar numerals.' v Figure 1 `1s a ltop view of one Aform `of the devlce Vof my invention.

Figure 2.,-is `a cross-section through the portion vof Figure 1.

.. `ligure 4; 1s a cross-section.throughthe line 4--4oi`Figure3; y

Figure 5 isa cross-section through the 'lfhefparticular -forin of the devicel of my invention `shown inthe accompanying drawings comprises a parallelogram-shaped device having the base 10, the 4tri'an'gularly shaped straight-'edge lside 11,V the straight;

edge side 12 'and the straight-edgev end 13.

' A diagonal straight-edge memberfl is p ositioned angularly -to the lstraight'-edge 12,

Y one side ofthe member 11 being straight. and the other-side being stepped.

The space between they straiglit-edge 11 and the steppedside yoft-he straight-edgef1.4y Y isused for measuring objects placed there-x inJ in'1 the same manner as object LB shown in Figure 1.'` The 'measurements in this space are limited to thenumber ofsteps promeasured or compared as to. their relativeV i with each other. Y

vided, thesteps being marked 'Ain sizes asin?. -dicated in Figure Itywillbe notedthat thestraightedges12. i and 14, the" slide- 15 and the jawsjl and 22V are so positioned'that `two objects maybe sizes, at the same time bythe graduationson the straight-edgel 12. "This is important las itis `frequentlydesirable to compare the element of ai device with anotherA element kof thatrdevice in order tobe assured vthat they will operate properly and inv conjunction Slidable upon the member 12 is 'a slide 15 having its angularly positioned 'edge lloey 192e. serialt ne; 110,fs4,Y i

tween the members and'f4 and. paranf/g. I tothe edge'offthe member 14. The-.slide y1 5 has an opening 17 vin its upper ace and'v is extende'dinto the `ca'liperf'jawv 18. "Aset screw 19 passing through a lthreaded, open-f `mg in theside oftheslidel allowsoffits fixed positioning upon the member-l2'.y The slide 15 Vhas a. trii Y' v j v 55 `ilidableuponthe membenlr-is aslidel21 extendingbeyond the sides of. the mem-- lower plate v v15Av of the angular opening 20.

ber 13. f

` The meniberflfhasthe,GXteldedialPf v -Tliegupper `faceof the memberll carries jaw 22.

thegscalegraduations 11S. -jThe upper `face .The `lower ,face oi the` scalesflOS and-NSS. i l The lower face ofthe'lnember "13 carries the scale.1 S,fthev slide' 21 carries thejvernier scale 21S andA thermemben .15A` carries rthe Vernierscale`15.S.'`

' 'of they member 12. carries the. scale gradua-Z, tions 12Sand12SS. The slide memberl; carries the've'rnier scales 15Sand 15SS. base 10. carries the .An opening 23 between fthe"members12` and 14 allows of kthe remo'valfof cumulating uponthe base`10;V

The following methodsof v'operation indivice. v

dust ac- 1 cate somefof tlieuses of my measuring ,de

--To determined'.theldiameter.of a roundv ob* i ject, .the object A ispositioned upon the base 10V between the memberill and the vslide15 and thel objecty and slide moved until. con-V tact is causedbetweenthe object,the member 14 and the slide `15,` 'a nd the diameter` reading/taken atkr the 'edge 24.1of'vtheslji'degy15 upon either scale 12Sor'12SS plus .such

Vernier scale V15S orlSS asgmay be shown.

When the shape of ,the article allows, asV

shown-'at B :inFigure 1, the measurement v The distance'i-rom; lin Figure" 1 is one inch.' The scale l 1 -2Sl is graduated to '64 parts, and hence,`object A scaling at 3 2 is Y o neehalf inchin diameter andlobjectB,scal- Y The ing'at 6sis vone inch in measurement.

maybe taken without the use-ofthe slide f j i i 100 Vernier 15S subdivides the rgraduati'ons 'of scale 12S into four parts.

:The scale 12SS hasA one ations, eachth'part being subdivided by Vernier 15555 on slide'15 into ten -parts,.thus

giving a Vernier indication of 1000ths'of`anvy inch. v

' strument, this being the type ot construction j inch. y

,Y The maximum and minimum When measuring objects between the caliper jaws'18 and 22, however, the scale`12S is read in inches, which are graduated in siX- Vteenths .of anl inch, lwith. Vernier scale S indicating sixty-'fourths of an inch,and 12SS graduated 1n twenty-fifths of 'an inch with Vernier 1 5SS` indicating 250ths of an K limits of measurement within a tapered vvmeasuring space, insteadV of Vbeing fixed at certain points, as shown inFigure 1, may be vaf riable atwill by making member 14 or 12 adjustable. The 'fii'xed and adjustable methods may be combined in thevone inshown vin drawingsV and described iherein. The adjustable method is'carried out on the reverse side of the device asshown in Fig'- ure 3. rIhe `fixed caliper-j aw extensionl 22 is continued across the width of the flat base 10, and has scales'marked thereon anda *slide 21 with Vernier which inuse correber 14' in Figure 1.

' graduations on scale 10S,

spondsto member 12 and slide 15 inFig- 25 urement Asshown in Figure 3, the maximum` limit e is one-twentieth ot an inch greater thanv the minimum. This twentieth of an-inoh dilierence .isv divided by the scale 13Sinto fifty parts, thus slide 21 indicates'measurements in thou sandths of'y an, inch. The Vernier on slide 21 subdivides each graduation into ten parts, giving a Vernier indication in 10,000ths of f aninch. In Figure 3, the slide 15is shown set at the tenth graduation of sc'alelOS or a minimum limit of one-halt inch, and maximum'limit-of'11/20th of an inch. An object occupying the space between the edge of' slide 21 and edge of extension 15A would measure .5250 ot an inch.

, An additional scale IOSS is shown in Figure v3 with Vernier 15AS and indicator therefor marked on extension 15A.

This scale andvernier may be used when articles aremeasured between caliper jaws'v 18 and 22. n It will be seen from the above description,

Vthat my device presents a simple and ac- Y I do n ot limit myself graduations indicatingrthe exact measurei ments thereof.y

to thepartioular size, shape,y number or arrangement ot partsas illustrated and described as there are given vsimply asa meansfor clearly describing my l;

inventionv c V f Y What Ir claim is 1 y y 1. In a measuring device, in combination, a basefa raised straight-edge iiXedly at- ,tached to thebase `and having graduations thereon, a second raised straight-edge fixed-V ly attached to thc base and positioned angularly to the iirst, mentioned straight-edge, y a slide memberslidable over the first mentioned straight-edge and having a straight edge paralleltothe second straight-edge, said lirstmentioned straight-edge being provided with indicia indicating the distance between the slide straight-edge and the second men'- tioned straight-edge. p 4

2. In a measuring device, in combination, a base a raised straight-edge resting upon the base throughout Yits length, "iXedly attached thereto and having graduations thereon; a second raised straight-edge resting uponthe base and fiXedly attached thereto inv angular position to the first, mentioned straight-edge; and a slide member slidableover the first mentioned straight-edge and having a straight-edge parallel to the second straight-edge, 'said first mentioned straight-edge being provided with indicia indicating the distance between the slide straight-edge andthe second mentioned straight-edge.

3. In a measuringA device, in combination, 100 a base, a raised straight-edge resting upon" the base throughoutfits length, fiXedly attached thereto and having graduations thereon; a second raised straight-edge resting upon the base' and iXedlyattachedithere- 105 rto in angular position to the iirst mentioned straight-edge; the graduations vupon the first mentioned straight-edge indicatingthe length of a line drawn at right-anglesl to the second straight-edge and passing through said graduations, and a slide member slidable over the first mentioned 'straight-edge,

and having a straight-edge parallel ,to the second straight-edge,"said first mentioned straight-edge,v being provided `with indicia indicating the distance between the slide straight-edge and Vthe second mentioned straight-edge, Y

Signed at New York city, in thecounty of New York and State of New York, this 19th 120 day of May, 1926.4

WILLIAMFRANCIS BULL.,

sok 

